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| Paper: |
Effectiveness of the Gregory-Loredo Algorithm for the Detection of Temporal Variability in Chandra Data |
| Volume: |
351, Astronomical Data Analysis Software and Systems XV |
| Page: |
73 |
| Authors: |
Rots, A.H. |
| Abstract: |
In searching for a reliable variability indicator for Chandra X-ray event data, we implemented and tested the Gregory-Loredo (Gregory & Loredo 1992) algorithm. The test was performed on 118 sources detected in a single observation, spanning the intensity range of 5 to 24000 photons over a total observing time of 102000 s. The G-L algorithm is extremely robust, yielding a reliable variability indicator as well as a light curve with optimal resolution while requiring a very modest amount of CPU time. The algorithm can also work on binned data and handle data gaps as well as variations in effective area. |
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